Pac-12 Football Championship Game headed back to Eugene?

In week 12, Arizona State and UCLA forged ahead, Colorado grabbed its first conference win, and USC upended Stanford. The latest Pac-12 Football Championship Game scenarios are as follows:

With Oregon's win over Utah and Stanford's loss to USC, the Ducks are now the frontrunner to host the championship game. Oregon must beat Arizona on the road and down Oregon State at home to lock up hosting privileges.

Arizona State is poised to win the Pac-12 South after its defeat of Oregon State, but must beat UCLA Nov. 23 in Pasadena to lock it up.

If UCLA beats the Sun Devils next week and USC in two weeks, UCLA wins the South.

If USC wins its last two games (at Colorado, vs. UCLA) and Arizona State drops its last two, the Trojans win the South.